need explication

hi guys ! i need some help.
i use appodeal as adnetwork.
but i dont understand why the number of the requests is lower than the number of views.

appodeal_imprime_ecran.jpg

Where exactly do you see that? lol

requests: 12,2k - fills: 11.7k - views: 1.8k

The amount of requests is always higher than the amount of views.
Because request is sent every time when SDK is initialized (at app launch).

However, many users leave application before they have a chance to see ad.

So, requests is how many times Appodeal SDK was initialized.
Fills — is the amount of advertisements returned by Appodeal server.
Views — is the amount of actual impressions occured on client side.